Systems and methods for deferred lock enforcement

Abstract

Systems and methods for providing deferred lock enforcement for transactions are described. The method includes receiving a first request for access to a data resource for a transaction, assigning a first lock to the transaction, and receiving, from a candidate reader, a second request for access to the data resource. The method further includes determining an interpretation of the first lock as i) a first lock type responsive to determining that the transaction is in a read phase or ii) a second lock type responsive to determining that the transaction is in a commit processing phase, and assigning a second lock to the candidate reader responsive to interpreting the first lock as the first lock type, or declining to assign the second lock to the candidate reader responsive to interpreting the first lock as the second lock type.

Description

BACKGROUND OF THE DISCLOSURE[0001]Data management systems can process data in transactions. A transaction can be a set of operations performed on data, and can involve reading and / or writing operations performed on data resources. Multiple transactions can be processed by a data management system, and at least some portions of those transaction may be performed concurrently by the data management system. A system of locks can be used to manage access to data resources. Different lock systems may provide for different advantages and different disadvantages. In some lock systems, certain locks, such as shared locks, may be assigned to one or more transactions, and some may be upgraded for other locks over the course of the one or more transactions transaction. Management of such upgrades may be computationally expensive and / or may be slow to process. Furthermore, a transaction may be assigned multiple locks corresponding to multiple data resources, and serial or in-sequence upgrading ...

AI Technical Summary

Benefits of technology

The present invention includes systems and methods for managing locks in a way that can result in faster and less expensive lock management processes. The system assigns a deferred enforcement lock to a transaction and can selectively treat it as a lock of one of a plurality of lock types depending on the phase of the transaction. This can improve performance and allow for changing of lock management policies across multiple data resources in parallel.

Problems solved by technology

Management of such upgrades may be computationally expensive and / or may be slow to process.

Furthermore, a transaction may be assigned multiple locks corresponding to multiple data resources, and serial or in-sequence upgrading of the multiple locks, or serial waiting for other readers to finish a read process before a commit process can be implemented may be slow.

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